#define geo_material_width 16
#define geo_material_height 16
static unsigned char geo_material_bits[] = {
   0x00, 0x00, 0xb8, 0x01, 0x80, 0x0b, 0xc8, 0x17, 0xfc, 0x07, 0xfc, 0x07,
   0xf4, 0x1f, 0xfc, 0x1f, 0xfc, 0x2f, 0xec, 0x3f, 0xec, 0x1f, 0xfc, 0x5f,
   0xf4, 0x31, 0xc8, 0x1f, 0xa8, 0x2d, 0xd0, 0x0e};
